1. Articles from Dandan Wang

    1-5 of 5
    1. Anterior Segment Parameters of Filipino-Americans Compared to Chinese-Americans and Caucasian Americans Using Anterior Segment Optical Coherence Tomography

      Anterior Segment Parameters of Filipino-Americans Compared to Chinese-Americans and Caucasian Americans Using Anterior Segment Optical Coherence Tomography

      Purpose : We compare anterior segment characteristics of Filipino- versus Chinese- and Caucasian-Americans to describe the differences in risk factors among each ethnic group. Methods : A cross-sectional study was conducted among Filipino, Chinese, and Caucasian subjects without glaucoma who underwent a standardized set of ocular examinations and anterior segment optical coherence tomography (Visante ASOCT) imaging. Zhongshan Angle Assessment Program (ZAAP) 4 was used for ASOCT image analysis. The following quantitative parameters wereobtained from ZAAP: (1) angle opening distance (AOD500, AOD750), angle recess area at 750 μm (ARA), and trabecular-iris space area at 500 and 750 μm (TISA500, TISA750); (2) iris parameters ...

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    2. Comparison of anterior segment optical coherence tomography parameters among Vietnamese, Chinese, and Caucasians

      Comparison of anterior segment optical coherence tomography parameters among Vietnamese, Chinese, and Caucasians

      Purpose To evaluate the difference in anterior segment optical coherence tomography (AS-OCT) parameters among ethnic Vietnamese, Chinese, and Caucasians Design Cross-sectional study Methods We prospectively recruited phakic non-glaucomatous participants (based on intraocular pressure <21 mmHg, normal optic nerve head and retinal nerve fiber, and cup-to-disc ratio <0.6) of three ethnic groups— Vietnamese, Chinese, and Caucasians. AS-OCT parameters including angle (angle opening distance, trabecular-iris space area, and angle recess area), iris (iris thickness, iris area, and iris curvature (Icurv)), and anterior chamber parameters (anterior chamber depth, width (ACW), area, and lens vault (LV)) were obtained. A linear regression model with ...

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      Mentions: Shan C. Lin UCSF
    3. Benefit of Measuring Anterior Segment Structures Using an Increased Number of Optical Coherence Tomography Images: The Chinese American Eye Study

      Benefit of Measuring Anterior Segment Structures Using an Increased Number of Optical Coherence Tomography Images: The Chinese American Eye Study

      Purpose : The purpose of this study was to evaluate the benefit of analyzing an increased number of anterior segment optical coherence tomography (AS-OCT) images on measurement values of various anterior segment parameters. Methods : Subjects for this cross-sectional study were recruited from the Chinese American Eye Study (CHES), a population-based study in Los Angeles, CA. Thirty-two AS-OCT images were acquired from one eye each of 83 consecutive subjects. Sixteen parameters were analyzed in each image, including angle opening distance (AOD), angle recess area (ARA), trabecular iris space area (TISA), trabecular iris angle (TIA), scleral spur angle (SSAngle), lens vault (LV), pupillary ...

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      Mentions: Rohit Varma UCLA
    4. Distinctive Findings in a Patient With Axenfeld–Rieger Syndrome Using High-Resolution AS-OCT

      Some distinct findings of a patient with Axenfeld-Rieger syndrome from the anterior chamber angle images by high-resolution anterior segment optical coherence tomography (AS-OCT) are described. The typical anterior segment anomalies of Axenfeld-Rieger syndrome, including iris atrophy, posterior embryotoxon, peripheral bridging tissue bands, trabecular meshwork elongation, and high insertion of the iris root into the posterior trabecular meshwork, can be visualized clearly on AS-OCT images. Specifically, the high-resolution mode of the AS-OCT program had improved performance in outlining finer structures such as the distinctive endothelial membrane covering the iris in Axenfeld-Rieger syndrome, which enabled better understanding of the pathophysiology in the ...
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    5. Comparison of Different Modes in Optical Coherence Tomography and Ultrasound Biomicroscopy in Anterior Chamber Angle Assessment

      Purpose: To compare anterior chamber angle width measurements by low and high-resolution anterior segment optical coherence tomography (AS-OCT) and ultrasound biomicroscopy (UBM). Patients and Methods: Thirty-six eyes of 32 patients with gonioscopically narrow angles from a university-based glaucoma clinic were recruited in the study. All subjects received AS-OCT {in "Anterior Segment Single" mode [low-resolution optical coherence tomography (LOCT)] and "High-resolution Cornea" mode [high-resolution optical coherence tomography (HOCT)]} and UBM examination in 1 or both eyes. Angle opening distance (AOD) and angle recess area of temporal (t) and nasal (n) quadrants were assessed using the customized software on each type of ...
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      Mentions: Shan C. Lin UCSF
    1-5 of 5
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